Question

find the missing number
9 +7+2 =281435
7+3+9 =212781
6+2+7= 121456
2+8+5 = 164036
8+4+6 = ​

Answer 1

Answer:

9/11 +(3/7+11/9)=(9/11*?)+(?*11/9)

Answer

Given U={1,3,5,7,9,11,13},A={0},B={2,4},C={1,9,5,13},D={5,11,1},E={13,7,9,11,5,3,1},F={2,3,4,5}

Now we have to find the subsets of U

Consider A={0}

Since 0∈/U,A⊈U

Consider B={2,4}

Since 2,4∈/U,B⊈U

Consider C={1,9,5,13}

Since 1,9,5,13∈U,C⊂U

Consider D={5,11,1}

Since 5,11,1∈U,D⊂U

Consider E={13,7,9,11,5,3,1}

Since 13,7,9,11,5,3,1∈U,E⊆U

Consider F={2,3,4,5}

Since 2,3,4∈/U,F⊈U

Therefore C,D,E are subsets of U.